We will be rolling out several small fixes mid-day today (Jan 29.) We do not anticipate any disruptions or problems, but f you spot any unexpected issues after 12 noon (PST), please report them in the designated thread in the DG Site Updates forum.
Yes, you can. I have done it for many, many years. The only problem is the weight when you have to do a thorough cleaning. I have changed to using hair rollers that you can buy in many stores. Those are cheap, light weight and to me easier to clean. Hope this helps.